Home / 20,790.54-28,693.26-12,295.26

Finding the Fourth Proportional to 20,790.54, 28,693.26 and 12,295.26

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Solution

The fourth proportional to 20,790.54, 28,693.26 and 12,295.26 is: 16,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.54 : 28,693.26 = 12,295.26 : x
  2. Step 2: Convert to fraction form
    20,790.54/28,693.26 = 12,295.26/x
  3. Step 3: Cross multiply
    20,790.54x = 28,693.26 × 12,295.26
  4. Step 4: Simplify right side
    20,790.54x = 352,791,091.95
  5. Step 5: Solve for x
    x = 352,791,091.95/20,790.54
  6. Step 6: Final answer
    x = 16,968.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.